http://www.w3.org/Bugs/Public/show_bug.cgi?id=10167
--- Comment #6 from Manu Sporny <msporny@digitalbazaar.com> 2010-10-08 00:13:01 UTC ---
(In reply to comment #5)
> (In reply to comment #4)
> > What bit of the text that you added prevents that from happening, as it's not that clear to me?
>
> Would this note suffice?
>
> Note that polyglot markup is case-consistent for values on the <code>rel</code>
> attribute. This is because XML treats the following as two different values for
> the <code>rel</code> attribute:
>
> <a rel=